What is the correct size drain plug on an ACC radiator?

[themechanic]

I bought the 26" radiator from ACC. Mine didn't come with a plastic plug nor a petcock for the drain. ACC told me on the phone he doesn't know the thread size. He guessed about M12 after I told him a 1/4 NPT doesn't fit.

The correct thread size is metric M12 x 1.25. Here's the part number for the plastic drain petcock and the transmission cooler line fittings.

 

[dadsbee]

PFSad when the supplier doesn't know their own product...

 

[khryslerkid]

PFSad when the supplier doesn't know their own product...

Or suppy a petcock.

 

[themechanic]

They're Made In China. But the quality is top notch, fitment, tanks, finishes, and beautiful welds. Especially, compared to the Griffin I just returned.

 

[themechanic]

I bought the 26" radiator from ACC. Mine didn't come with a plastic plug nor a petcock for the drain. ACC told me on the phone he doesn't know the thread size. He guessed about M12 after I told him a 1/4 NPT doesn't fit.

The correct thread size is metric M12 x 1.25. Here's the part number for the plastic drain petcock and the transmission cooler line fittings.

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Sadly, the drain hole is directly in line with the passenger side strut rod and the petcock interferes with the threads preventing the radiator from dropping in all the way.